Automatic cement packing machine



Aug. 11, 1931. w. R. PETERsoN Y AUTOMATIC CEMENT PACKING MACHINE Filed July 20, 1927 s sheets-sheet l 1 AUS'- ll, 1931- w. R. PETERSON UTOITIC CEMENT PACKING MACHINE Filed July 20, 1927 6 Sheets-Sheet 2 Aug. 1l, 1931. w. R. PETERSON AUTOMATIC CEMENT PACKING MACHINE F-ed July: 20. 1927 v 6 Sheets-Sheet 3 AU8- 1,1, 1931 w.l R. PETERSON 1,818,091 v AUTOMATIC CEMENT PACKING MACHINE Filed July 20, 1927 6 Sheet-Sheet 4 www @gm aww,

Aug. ll, 1931.` w. R. PETERsoN 1,813,091

AUTOMATIC CEMENT PACKING'MACHINE med July 2o, 1927, e sheets-sheet 5 gmc/Wto@ wam @www @ttor MW Aug. ll, 1931. w. R. PETERSON AUTOIATIG CEMENT PACKING MACHINE n, aan

Patented Aug. ll, 1931 i I UNITED STATES PATENT `oFF1cE` fl WILLIAM E. PErrEEsoN, or CHICAGO, ILLINOIS, assIeNon. EY MEsNE ASSIGNNEms, 'ro BATES vaLva EAG coEroEa'rIoN. orcmcaso, ILLINOIS. a coEroEa'rIoNpr y 'v NEW JERSEY sn'ronarrc CEMENT PACKING Mmmm i application mea my 2o. 1927. serial No. 207,152.

This invention relates to automatic means for filling and weighing valve bags with cement or similar pulverulent material. More particularly, it relates to means for mechanil cally placing the machine in condition to start lling, upon the operator moving a starting handle,'and for automaticall stopping the feeding and discharging t e bag when the proper, weight of material has 1 been lilled into the bag.

Details of the invention will appearas the description proceeds.

In the accompanying drawings forming a part of this s ecification, Figure lis a vertical cross-section of apparatus embodying the invention; Fig. 2 is an enlarged portion of Fig. 1 showing in detail themajorportion of the mechanism embodying the invention; Figs. 3, 4 and 5 are views somewhat similar to Fig. 2, but showing the parts in different positlons which they assume during the operation ofthe apparatus; Fig. 6 is an enlarged detail showing the lower art of themechanism disclosed in Fig. 1, an showing the parts in discharging position.

The apparatus to which the invention is shown applied comprisesY a hopper 1Q for containing cementor other pulverulent material to be fed into bags. This hopper is supported upon any suitable frame 11. In the upper end of the hopper there is a feeding shaft 12 having suitable means,vnot shown, mounted thereon for feeding material downward into the hopper. At the lower end of thehopper there is a propeller shaft k13 having thereon a suitable propeller, not shown, for discharging the materialfrom the hopper through an outlet opening 14. A gate 15 is provided for closing this outlet opening when the discharging of material is to be stopped.

,A lever 16 isfulcrumed upon the frame at 17 andhas a lug 18 to vwhich the gate is at-y tached by a pivotal connection 19. A spring 20 is attached at 21 to the lower end of the gate and to a stud 22 fixed on the rameso` that the spring normally pulls the gate to- Wards closed position. An A shaped frame 23 is mounted in front ofthe opening. Scale beams 24 fulcrumed kThe long vertical arms 42 of the L frame lrock shaft. An arm 46projects from the lowat 25`are provided at their ends with pivotal connections 26 upon which the legs of the A frame rest. lThe upper end of the A frame 1s held in proper posltio'n by. a link 27 which connects it with the main frame. Across p iece 28 between the legs of the A frame carries a spout'29 around which'the valve of a bag may be placed, and which is brought into registry wit outlet opening 14 when a bag is to be filled. y Y

The legs of the A frame have downward extensions 30. A support 31 for the bottom of the bag is mounted upon these downward extensions. In the construction shown the edges of the downward extensions are provided with notches 3,2.` A pivot lug 33 on each side of the bottom isadapted to enter one of these notches. A bottom supporting vbracket, 34 hasone end 35 adapted to enter one'of said notches and an, offset ortion 36 adapted to Contact the other side o extension 30. The end 37 of bracketV 34 rojects beneath the bottom support yof the bag so as to maintain it normal y in an approximately horizontal osition. `l u kFor'disclliarging the bag there is a tilting frame 38 having side mem ers which are ap proximately L-shaped. The bottom arm 39 of this L-Kshaped frame is pivoted at 40 on a bracket 41 projecting from the main frame.

carry a cross piece 43 adapted to contact the side of a bag near its top.I l

Mounted above the gate there is a rock shaft 44.` A lever 45 is ulcrum'ed upon this u er end ofthe L frame andis connectedby a ylink 47 with lever 45. A bracket 48 is yattached to link 47 in such a way that it is adjustable vertically. Bracket 48 carries a roller 49 in position to contact a lug 50 on the bottom support when thelink is raised.

Feed shaft 12 carries an eccentric 51 which is connected by a link 52 to an arm 53 on shaft 44. A discharging arm 54 extends from rock shaft- 44 and carries a lug 55. "A i pawl 56 is pivoted at 57 on lever 45 and has atooth 58 in position to engage lug 55 when a bag is to be'discharged. From the lower end of pawl 56 there lextends an approximately horizontal arm 59. A spring 60V is 1.0 i

interposed between this horizontal arm of the pawl and a lug 61 on lever 45, so as to normally press the horizontal arm downward.

A lock 62, for normally holding the pawl out of operative position, is pivoted at 63 on the frame, and has a stud 64 normally en. gaging the horizontal arm of the pawl and holding it up against the pressure of spring 60. A catch 65 is pivoted at 66 on the frame and has a notch 67 in which there normally rests a plate 68 on member 62, thereby holding the member in its locking position. A spring 69 is attached at 70 to catch 65 and to a pin 71 on the frame and holds the catch in engagement with the locking member.

A trip bracket 72 is pivoted to the frame at 73. The free end of the trip bracket has a supporting catch 74 pivoted thereto at 75, and adjustable about the pivot. The lower end 7 G of the supporting catch is adapted to rest upon a wear plate 77 mounted on the A frame, when the bag is in filling position.

Lever 16 has an arm 78 projecting upward therefrom at its free end. Arm 78 is provided with a roller 79 beneath which there works a projection 80 from the trip bra'cket.

A roller 81 is mounted on the trip bracket in position to co-operate with a tripping member 82 for the lock catch. The upper end of member 82 carries a stud 83 adapted to rest in a notch in catch 65.

Pawl lock 62 has a forwardly extending arm 85 carrying a lug 86 in position to be contacted under suitable circumstances by a lug 87 which is an extension of lever 45 and projects from the rock shaft in an opposite direction from arm 54.

Above the tripping bracket there is an arm 89 projecting from rock shaft 44 and carrying a link 90. A lifting catch 91 is pivoted at 92 to link 90 and has a notch 93 in position to engage a stud 94 on the trip bracket, under suitable conditions. A link 95 is pivoted at 96 to lifting link 90 and at 97 to the frame. The free end of link 95 carries an abutment 98. A spring 99 attached to link 90 and to lifting catch 91 normally7 draws the catch against abutment 98.

A starting handle 100 is pivoted at 101 to the main frame and has an upwardly extending forked arm 102. A starting trip 103 is pivoted at 104 to the main frame, and has projecting therefrom a stud 105 between the forks of arm 102. The upper end 106 of starting trip 103 is in position to operate catch 91 under proper conditions. A spring 107 is attached at 108 to the starting trip and its other end 109 is hooked about the fulcruin pin 101 of lever 100. The starting trip has a heel 110 carrying a set screw 111 in position to abut a lug 112 on the frame when the trip is in one position. A set screw 113 through lug 112 is adapted to form a stop for trip 103 when the trip is in its normal, or nonactive, position.

Starting handle 100 is provided with a lug 114 adapted to be engaged by a lug 115 on lever 16 when the lever is raised. Lever 16 has an end 116 projectingl upward from its fulcrum and carrying a wear block 117 in position to cont-act a stop 118 on the main frame when the lever is in its gate-closing position.

The operation of the mechanism will now be described. Starting with the mechanism in the position in which it is shown in Fig. 1, it will be seen that rock shaft 44 will be oscillatedcontinuouslybythe continuously driven eccentric on shaft 12, but that this does not result in any operation of the other parts of the mechanism because pawl 56 is held out of engagement with lug 55 and lifting catch 91 is held 4in inoperative position by spring 99, and furthermore, bracket 72 is in the position to which it is raised by lifting catch 91, and the catch has no function to perform with the parts in this position. lt will be understood that a bag. not shown, is mounted upon spout 29 when thc parts are in the condition shown in Fig. 1, and material is being propelled through the outlet and spout into the bag. Then a sufficient amount of material has been fed into the bag to cause movement of the scale beam, the A frame gradually descends. Upon the descent of the A frame, the trip bracket moves about its pivot 73 and so draws the lower end of catch 74 towards the hopper and off of wear plate 77. Thereupon trip bracket 72 falls to the position in which it is shown in Figs. 3 and 4. Then this occurs a wear plate 119 on the rear end of the trip bracket is moved upward out of engagement with wear block 117 on end 116 of lever 16. This frees the lever and allows the closure of gate 15 by spring 20.

' At the same time. roller 81 contacts trip 82 and moves catch 65 out of engagen'ient with pawl lock 62. This allows spring 60 to move the toothed end of the pawl into position to engage lug 55 upon the next oscillation of arm 54. Then the pawl en gages the lug during the upward movement of arm 54, lever 45 and link 47 are likewise raised. The consequent raising of arm 46 tilts the L-shaped frame forward to the position in which it is shown in Fig. 6. and the lifting of roller 49 against lug 50 tilts the bottom support to the position in which it shown in Fig. 6. Tilting the bottom relieves tension of the bag 120, partially indicated in dotted lines in Fig. 6, on the spout and facilitates the discharging action of frame 38. The next down 'ard oscillation of arm 54 returns the bottom support and the L-shaped frame to their normal positions.

W'hen the trip bracketfalls. roller 81, after operatingr member 82, moves past that member, so as to allow its return to normal posi tion, which is accomplished by a spring 121 GODIlecting it with catch 65. Then arm 54 is raised arm 88is lowered and lug 87 contacts l 86 and returns theslock to its normal Yposition, where it is held by catch 65, so that the pawl is released upon the next downward movement of arm'54 and is not re-engaged until the catch is again operated. Pin 71 is extended into the path of plate 68, so as to pre# vent member 62 fromoscillating so far, when tripped, las to move lug 86 out ofthe path of lug 87; y l, n l When gate lever 16 drops, it makes possible the lowering of handle 100. As will be readily Seen, spring 107 being attached at points 108 and 109, which form in effect the ends 0f a toggle the knuckle of which is at 104, holds the lever'100 in its raised position, as shown in Figs. l, 2 and 3, until it is .desired to start the filling of another bag. After the operator has placed another bag upon the filling spout, lever 100k is depressed, with the re-y salt that end106 of member 103 is moved for'- ward against lifting catch 91. Spring 107, after thetoggle is moved so that the vspring passes forward of knuckle 104, forces end 106 forward until the catch contacts lug 94, or, if the catch is raised at the time above end 106,

until set screw 111 `contacts block 112. In,

the latter case, beveled end 122 of the vcatch contacts end 106 upon the next descent of the catch, so that the catch is forced forward into operative position. In either case, the lifting catch 91 is pressed forward against stud 94 when notch .93 is moved beneath itY and in position to raise it upon the next upward movement of arm 89. Upon this upward movement the trip bracket is raised, extension 80 from the trip bracketacts upon roller 79 to raise the gate, and plate 119, which is yieldingly attached to the trip bracket, is moved to the right of plate 117, as shown in Fig. 5. Lug 115 encounters lug 114 and returns handle 100 to its upper position. Upon the downward movement of link 91, member 74 drops far enough, before contacting plate 77, to bring plates 117 and 119 into contact and free handle 80 from roller 79.

It will be readily seen that roller 81 may oscillate member 82 upon the raising of the trip bracket without affecting the position l0 of catch 65, the forward movement of the upper end of member. 82 being idle. Thus thel parts are. returned to the position in which they are shown inFig. 1 and the cycle o :f operations is re ted. v From the, above escription it will readily appear that the describedk apparatus will start the filling of a bag upon the depression if handle 100, and automatically continue that filling until thepro er weight of the In material yhas been place in the bag, and thereupon automatically close gate 15, dump the bag from themachine, and return the parts toy proper position for filling` another bag when a bag is placed upon the filling spout and handle 100 is again depressed.

It will be readily understoodthatvarious changes may be made in .the mechanical movements hereinbefore described within the terms of the appended claims.. What I claim is: f i 1. Apparatus for filling valve Abags ,com prising a filling spout adapted to enter the valve of a bag, mechanical means for forcing the bag from the spout when filled, and means controlling the operation of said mechanicai means by the weight of material in the bag. f

Apparatus for filling valve bags comprising a spout adapted to enter the valve 1 at the top of a bag, a pusher adapted to contact the side of the bag beneath the valve, a source of power, and a one-operation clutch adapted yto connect the pusher with` the source of power to give the pusher one reciprocation. f

3. Apparatus for filling valve bags comprising -a spout adapted to enter the valve at the top of a bag, al pusher adapted to contact the side of the bag beneath the valve,

a source of power, a one-operation clutch adapted to connect the pusher with the source of power to give the pusher one reciprocation, and means controlled by the ,weight of the bag for closing said clutch.

4. Apparatus for filling valve bags comprising a spout adapted-to enter the valve at the to of the bag, a support for the bottom of t e bag, said support being pivoted near one edge, and power means for oscillating the other edge of said supporty about said pivot. f

5. Apparatus for filling valve bags coml prising a spout adapted to enter the valve at the to of the bag, a support for the bottom of tlie bag, said support being pivoted near onev edge, mechanical means foroscillating the other edge of said support about said pivot, and means actuated by theweight of material in the bag for causing said mechanical means to operate. j n 6. Apparatus for filling valve bags comprising a spout adapted to enter the valve at the top of the bag, a support for the bottom of the bag, said support being pivoted near one edge, and mechanical means for oscillating the other` edge of said support about said pivot, a source of power, a oneoperation clutch connecting the source of power to said mechanical means, and means controlled by the weight ofmaterial inthe bag for closing said clutch4 y 7. Apparatus for filling valve bags com'f prising a spout adapted toventer the valve at the top of the bag, a support for the botf tom of the bag, said sup ort being pivoted near one edge, and mech) raising the other'edge of said supportwith a filled bag thereon. y y

8. 'Apparatus for filling valve bags comprising a spout adapted to enter the valve anical means for ros Ano

at the top of the bag, a support tor the bottom of the bag, said support being pivoted near one edge, and mechanical means 'for raising the other edge ot said support, a source of power, a one-operation clutch connecting the source of power to said mechanical means, and means controlled by the weight ot material in the bag i'or closing said clutch.

9. Apparatus ior filling packages comprising a spout adapted t-o convey material into a package, a propeller adapted to force material through the spout, agate for closing the opening between the propeller and spout, means constantly urging the gate to closed position, a device for opening the gate, a source ot' power, and a one-operation clutch for connecting the source ot power with said device.

10. Apparatus for illing packages comprising a spout adapted to convey material into a package, a propeller adapted to torce material through the spout, a gate for closing the opening between the propeller and spout, means constantly urging the gate to closed position, a device tor opening the gate, a source ot power, a one-operation clutch 'for connecting the source of power with said device, and manual means to close the clutch.

11. Apparatus for iilling packages comprising a spout adapted to convey material into a. package, a propeller adapted to torce material through the spout, a gate for closing the opening between the propeller and spout, means constantly urging the gate to closed position, a source of power, means connected to said source of power for opening the gate, and a catch adapted to hold the gate open after it has been opened by said mechanical means.

12. Apparatus for iilling packages comprising a spout adapted to convey material into a package, a propeller adapted to force material' through the spout, a gate for closing the opening between the propeller and spout, means constantly urging the gate to closed position, a source of power, means connected to said source of power ttor opening the gate, a catch adapted to hold the gate open after it has been opened by said power means, and means controlled by the weight in the bag to release said catch and allow the gate to close.

13. Apparatus for iilling packages comprising a spout adapted to convey material into a` package, a propeller adapted to force material through the spout, a gate `for closing the opening between the propeller and spout, means constantly urging the gate to closed position, a device for opening the gate, a source ot power, a one-operation clutch tor connecting the source of power with said device, manual means to close the clutch, a

catch to hold the gate open after it has been opened by said device, and means controlled by the weight of material in the bag for releasing the catch.

14. Apparatus for filling valve bags comprising a spoilt adapted to enter the valve of a bag, a. discharge device adapted to :torce material out through the spout, a gate tor the opening between the discharge device and the spout, an ejector for 'forcing the bag from the spout, a spring constantly urging the gate towards closed position, mechanical connections for opening the gate, a source of power, a one-operation clutch tor connecting the source ot' power with the means for opening the gate, a catch for holding the gate open after it has been opened by said means, a one-operation clutch for connecting the source of power with said ejector', and common mea-ns controlled by the weight ot' material in the bag for releasing the catch and allowing the gate to close and for closing the clutch operating the ejector.

15. Apparatus for filling valve bags comprising a spout adapted to enter the valve oli a bag, a discharge device adapted to Yforce material out through the spout, a gate Afor the opening between the discharge device and the spout, an ejector ior lorcing the bag Yfrom the spout, a. spring constantly urging the gate towards closed position, mechanical connections or opening thegate, a source of power, a one-operation clutch for connecting the source of power with the means tor opening the gate, a catch tor holding the gate open after it has been opened by said means, a one-operation clutch for connecting the source of power with said ejector, common means controlled by the Weight oit material in the bag for releasing the catch and allowing the gate to close and tor closing the clutch operating the ejector', and manual means for closing the clutch operating the gate-opening means.

16. Apparatus :t'or filling valve bags comprising a` spout adapted to enter the top ot a bag, a discharge device adapted to force material through the spout into a bag, a gate for the opening between the discharge device and spout, a spring constantly urging the gate towards closed position a support for the bottom ofthe bag pivoted on its side towards the outer end of the spout, an ejector adapted to contact the bag beneath the spout on the side towards the discharge device, a constantly operating shaft above the spout, a. one-operation clutch adapted to 'force the ejector in a direction to shove the bag oli' ot the spout and to raise the rear edge of the bottom support and then to return said ejector and support to their normal position, a clutch adapted to connect means for opening the gate with the shaft, a catch for holding the gate open after it reaches open position, manual means for closing the last named clutch, and common means controlled by the wei ht of the material in the bag for releasin t e catch and allowing the gate to close an for closing the first said clutch.

In testimony whereof,' 'I have hereunto signed my name to this specication.

- WILLIAM R. PETERSON. 

